# Tag Info

14

Using Picasa (3.8) it's very easy to either shift or set the date of a batch of photos. And it's cross-platform (Windows, OSX and Linux) and free. And no terminal fiddling... Open Picasa Select your photos Click Tools > Adjust Date and Time Fill in as required (see screenshot)

12

If "to get good shadows" he means shadows cast by surface features on the moon, thats entirely a matter of opinion. The moon has dozens of faces, from thin crescents, normal crescents, half moons, gibbous moons, full moons for both waxing and waning, as well as eclipsed moons. I've shot the moon a lot myself, and I can't say there is any "right time". Its ...

8

EXIF v2.31 (p49) defined time-zone offset fields in 2016 and the XMP time-zone guidelines (p33-34) also consider time-zones. The implementation in cameras and programs is rather minimalist at the moment. See also my answer to an older question: What do you do with your camera clock time in relation to time zones?

7

Absolutely. In some cases, people do this for the effect that is achieved. Flickr, for example, has a group dedicated to images from expired film. Some of the outcome is really quite nice, but it is obviously going to be hit or miss since the nature of degradation is unpredictable. Also, film expiration is not absolute. It largely depends on storage ...

7

I like to have date and times on photos reflect local times and date at the location. Unlike another respondent, I like to be able to search for a photo taken "at about 3pm on the Thursday afternoon when I was in Xian" and, while there are other ways of cataloguing and ordering, being able to search on local date and time is a bonus. Travel from NZ involves ...

7

There's already a similar question on the ExifTool forums. It can be done using two sequential ExifTool commands. First, make sure all the date to the same exiftool -datetimeoriginal="2015:02:22 00:00:00" DIR And then increment the time on each exiftool '-datetimeoriginal+<0:0:${filesequence}0' DIR 7 No. PNG does not support EXIF. In fact, lack of a standardized metadata block is one of its big disadvantages for photography. If you need a lossless format which preserves (very-similar-to-EXIF, since it's the basis for EXIF) metadata, try TIFF. The downside, though, is that TIFF rendering support is not as widespread as that for PNG (for web applications ... 7 What Windows displays under the "Date Taken" property isn't an embedded tag. It fills that property from a number of tags depending upon the file type. For example, for a JPG, Windows will use any of these tags: EXIF:DateTimeOriginal, XMP:DateTimeOriginal, EXIF:CreateDate, and the system FileCreateDate. ExifTool can create an EXIF:DateTimeOriginal tag in a ... 7 Yes, it is the time at which the location was determined. That may be a second before the picture was taken, but it could be much more, if for example you are in a canyon and the GPS is unable to make a fix. 7 ExifTool is my go-to tool for time-shifting photos. Assuming Windows, to add 1 hour to all date/time fields stored in the photo metadata: exiftool.exe -AllDates+=1 C:\path\to\folder\of\photos or to subtract one hour: exiftool.exe -AllDates-=1 C:\path\to\folder\of\photos By default, this will make a copy of the original as backup before modification. To ... 6 As I just found out, this is a bug in Lightroom, more than a year old, but still not fixed. Please see this thread on the support forums where an employee of Adobe confirmed the bug to be linked to the USB connection with the camera. They also recommend to use a card reader instead of the USB connection. 6 That film can certainly still make images, but some things could be a little off. It was stored at rather high temperature, so expect some degradation. If it's color film (you didn't say), then the color ballance is probably the biggest change you'll notice. The next effect is loss of ISO film speed. The main reason for color ballance problems is that ... 6 Unfortunately not. Most cameras only have a 'dumb' timezone-ignorant clock. You do of course also have no guarantee that the clock is set right, so the timestamp in the EXIF data may be wrong anyway, even if you know or assume the correct time zone. What you might do to improve your interpretation of the EXIF timestamp is, if the image is geo-tagged, to ... 6 CIPA DC- 008 is the standard for Exif 2.2. Of note it makes no mention of "timezone." "GMT" is also not mentioned either. The term "UTC" does appear but only specifies the GPS time is recorded as such. Pedants may note that this is slightly misleading since GPS time is not identical to UTC My point, in short, is that omission of timezone is likely not ... 5 My cameras (Nikon D300s and Canon S95) have the capacity to use time zones. For instance at the moment I'm in Brazil, and rather than change the time I've left them on GMT (or UTC if you're being modern about it) and changed the time zone to -3. In the last 4 months I've been through three time zones. Part of my work involves photography and having the right ... 5 Black and white The part of the film most exposed to the environment is on the outside of the spiraled roll tucked into the reel. It's therefore a reasonable test to withdraw a small amount in a changing reel, clip it off, load it into a tank, and develop and briefly fix it. If the film comes out clear, or perhaps with some periodic marks along the edges (... 5 With regards to EXIF v2.31 (p49) time-zone integration (2016) and XMP time-zone guidelines (p34) it might make sense to look at this problem once more. Local time is important especially in the human-based interaction with pictures. Looking at a sunset photo one expects the clock to show something in the second half of the day, for breakfast photos rather ... 4 Photographing the moon is a lot like shooting a portrait. When the moon is full the light hitting the moon is coming from your direction, this is flat light, you can get a lot of details but you can't see and texture in the moon because there are no shadows (think about it as the on-camera flash of lunar photography). When the moon is a thin crescent the ... 4 Page 68 of the K-5 Operating Manual states the following: ... 9. Press the four-way controller (▼) to select [Settings complete]. 10. Press the OK button. ... When you press the OK button in Step 10, the seconds value is set to 0. To set the exact time, press the OK button when the time signal (on the TV, radio, etc.) reaches 0 ... 4 This is very helpful, it shows many available tools: http://petapixel.com/2012/11/05/how-to-fix-your-timestamps-if-you-forgot-to-update-your-camera-for-daylight-savings/ namely how to use Adobe Lightroom, Picasa, Jhead, ExifTool and Exifer to shift the date. Personally I use ExifTool, and Exiv2, which works on MacOSX to do the following in the terminal: ... 4 Please check out http://jambula.sourceforge.net/ to batch insert shooting date/time/comment on a jpeg image in different formats and languages. A special feature is that the date stamp is lossless. It is supported on Linux and Mac also. 4 I don't think any significant software which uses this. The EXIF standard is to assume that the time zone matches the correct one for the location where the photo was taken. Most cameras have ad hoc non-standard tags for dealing with this; for example, my Pentax camera sets World Time Location. However, EXIF isn't all there is, and in fact I think most ... 4 Yes, it is possible. The ideal case would be if it was visible from your home so that you can leave a tripod stationary and just attach the camera when you need to. If the construction site is somewhere else, however, you can't use the tripod to mark a location. Better try to think of a good location to shoot from with something that won't move for a while - ... 4 The Nikon D5100 uses a rechargeable internal clock battery. It should have enough charge to give you 3 months to charge the main battery. A main battery that is almost completely empty, should also have enough power left to keep the clock running for months or even years. There is probably a problem with your internal battery, or a contact to it. The ... 3 well, just this week i found two rolls of film. a 35mm kodacolor 24 exposure. had no idea when it was from. just got the negs and a cd back. turns out the pics are from summer of 1990. very grainy and very washed out colors. but, adobe photoshop "perked" up the pictures and i'm glad i got them developed. the other roll is even older. it's kodacolor ... 3 The real reason in the canon case is the license for the codecs. If you go past the 29:59 then you are required to have a license per unit. http://www.mpegla.com/main/default.aspx http://www.businesswire.com/portal/site/home/permalink/?ndmViewId=news_view&newsId=20090705005026&newsLang=en Wav files are limited due to the 32bit code and thus ... 3 RAW files contain more data than JPEGs so saving/moving the files takes more time. The RAW and JPEG files should be the same resolution, but per pixel there is more data. Connecting to a PC isn't going to make it take less time; it may actually take longer because the speed of writing to the SD or CF card is probably faster than the USB connection to the ... 3 No, the GoPro Hero 3+ does not have a self-timer mode. But there are several ways of taking 'selfie' photos: You could set the Hero to timelapse mode, ie taking a photo every 0.5, 1 or 2 seconds. Press the shutter, and it will start taking a series of photos. So you can then get in position for the selfie, and it will get a number of photos of you. You can ... 3 Try Irfanview. It is freeware (AFAIR) and has a very flexible batch renaming system. Other than that I would try writing a script, something along the lines of for X in$(seq -w 0 20) ; do plus=$(expr$X \* 10) exiftool -alldates+="0:0:0 0:0:$plus" image_$X.jpg done The first line creates a loop through the numbers in the file names that you have, eg. ...

3

Well, I didn't post my bash answer because the question specifically asked about a Windows solution, but since two other people did, here's what I came up with: for file in *.jpg do exiftool -DateTimeOriginal="1111:11:11 00:00:00" $file exiftool -DateTimeOriginal+="00:00:${file:6:4}0" \$file done Avoids messing with the date command. :) Note that in ...

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